I am truly sorry, John.
You are talking about a 40+ year old boat with too many owners. And all leave their mark good and bad.
Some boats this old need to be removed. Others, like the one I bought, were so well maintained and restored before I bought her that I feel like the luckiest guy in the world!
Prairie 29s seem to be more and more difficult to find. Good ones even more difficult.
Just offer someone with a good one a huge wad of cash and see what happens
I do wish you well.
Keep dreaming, searching and hoping.